code for converting raw image to jpeg image

[nikit]

above code is simple to understand.
Now I have another issue. Have wrote C code in gstreamer which reads a raw
file from appsrc and writes it to as raw file in appsink. 
To be sure both appsrc and appsink use buffers to store and retrieve data.
 
Now I linked jpegenc in between appsrc and appsink.
Example :
link_ok = gst_element_link(app->src, app->encoder); ----1
link_ok = gst_element_link(app->encoder, app->imagesink);----2

where :
app->src = gst_element_factory_make("appsrc",  "mysrc");
app->encoder = gst_element_factory_make("jpegenc",  "mysrc");
app->imagesink = gst_element_factory_make("appsink",  "mysrc");


Problem:
link_ok at 1 is 0, and
link_ok is 1

There is problem in linking appsrc and encoder?
Is there an solution to solve this?



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